Thermocontrolled electric device



Sept. 30 1924.

D. C. CASTELLANOS THERMOCONTROLLED ELECTRIC nsvrcs Filed Feb. 9. 1923 INVENTUR DIDNISIU C. CFISTELLHNUS HTTURNEY Patented Sept. 30, 1924.

UNITED STATES DIONISIO C. CASTELLANOS, OF SAN QUENTIN, CALIFORNIA,

THERMOCONTROLLED ELECTRIC DEVICE.

Application filed February 9, 1923.

To all whom it may concern:

Be it known that I, DIONISIO C. CASTEL- LANOS, citizen of Mexico, residing at San Quentin, in the county of Marin and State of California, have invented new and useful Improvements in Thermocontrolled Electric Devices, of which the following is a specification.

This invention relates to improvements in a thermo controlled electric device. 7

. The principal object of this invention is to produce a device which may be introduced into an electric circuit for the purpose of completing the circuit when the surrounding atmosphere has become heated to a predetermined degree.

Another ob ect is to provide a device which is extremely simple in construction, cheap to manufacture and therefore cheap to install.

Another object is to produce a device which may readily be reset for future use.

A still further object is to produce a device of this character which will be positive in its operation and therefore capable of functioning under all conditions.

Other objects and advantages will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification, and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a top plan view of my device, with the cover removed, and

Figure 2 is a cross section taken on the line 2-2 of Figure 1.

Applicant is aware of the fact that various thermostatic controls have been used for the purpose of completing an electric circuit. These controls, however, have been of such a nature that they automatically become destroyed, or if not destroyed, could not be placed in operation again without consider able trouble.

I have sought to overcome these objections, by providing a device which employs a meltable composition, which normally holds the parts out of contact with one another and which when melted allows a magnetic needleto revolve and therefore make a contact and I have further provided means whereby the device may be reset by the simple throwing of a lever.

In the accompanying drawings wherein for the purpose of illustration is shown a Serial No. 618,098.

preferred embodiment of my invention, the numeral 5 deslgna tee a receptacle as a whole having an upstanding annular side wall 6,

a base 7 and an internal annular flange 8.

A removable cover 9 is provided having an insulating plug 11 through which a Wire 12 passes.

At 13 I have shown a support secured to the upper edge of the wall 6 and extending across the receptacle. This support carries a pin 14 to which is pivoted an iron bar 16. This iron bar is adapted to have passing therearound a coil of wire 17 thus transforming the bar into an electro magnet.

A slot 18 is formed in the upstanding annular side wall 6 and extends through an arc of 90. This slot permits a handle 19 attached to the iron bar 16 to extend therethrough and through its manual operation permits the iron bar to be swung to the dotted line position in Figure 1.

One end of the wire 17 is secured to the wire 12 and the opposite end is secured to a pin 21, upon which a permanent magnetic bar 22 is pivoted. This bar carries at its upper ends, pins as shown at 23 and 24, which pins extend downwardly and enter a meltable composition 26, which is contained within the space between the upstanding annular side walls 6 and the upstanding annular ring 8.

The magnetic bar 22 has formed upon its under surface a contact 27 which is adapted when moved to come into contact with a contact 28 secured upon the annular ring 8.

A wire 29 is connected to the contact 28 and to one side of a lamp 31. The opposite side of this lamp is connected by a wire 32 to one side of a bell 33. The opposite side of this bell is connected by a wire 34 to one side of a battery 36, while the opposite side of the battery 36 is connected by a wire 37 to the wire 12, thus completing the circuit.

fact 28. This Will. immediately complete the circuit and as part of the Wire in the circuit surrounds the iron bar 16, the same becomes a permanent magnet and therefore holds the contacts 27 and 28 more firmly together. When it is desired to reset the device the handle 19 is moved together With its attached iron bar to the dotted line position in Figure 1.

The meltable composition will allow this movement as the permanent magnet 22 Will follow the iron bar. After the composition has again become hard, the handle 19 is re turned to its normal position or full line position of Figure '1 and the device is then again ready to operate.

By varying the meltable composition, it is ossible to cause the device to operate at any desired temperature.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size and arrangement of parts may be resorted to Without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described my invention, I claim 1. In a device of the character described, a receptacle, a meltable composition in said receptacle, a permanent magnetic bar pivoted in said receptacle and adapted to be held against rotation by said meltable com- 2. In a device of the character described,

a receptacle, a support mounted in said receptacle, an iron bar pivoted beneath said support, a permanent magnetic bar pivoted beneath said iron bar and normally adapted to be held at right angles to said iron bar and a meltable composition adapted to hold said magnetic bar against rotation with respect to said iron bar While said composition is in solid form.

3. In a device of the character described, a receptacle having a vertical annular well, an annular ring positioned Within said receptacle and spaced from said Wall, a meltable composition confined between said annular ring and said Wall,'a magnetic bar supported above said composition and having pins extending into said composition, a contact mounted on said annular ring, a contact mounted on said magnetic bar, an iron bar positioned above said magnetic bar, an electric circuit having one of its terminals connected to said contact and the other of its terminals connected to said magnetic bar.

in testimony whereof I afiix my signature.

DIONISIU (l. OASTELLANOS. 

